History

chayemme 22cd1bf242 Work around fix for "libvtswidevine32.so" not found (HIDL versions) am: `79819a085d` am: `10853c6c2a` am: `0794b5ebf4` am: `3393ab61cf` Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2766827 Change-Id: Icc23a4ef7eaa61dd4002f3563a1e29a1fa244327 Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>		2023-10-04 23:55:08 +00:00
..
vts/functional	Work around fix for "libvtswidevine32.so" not found (HIDL versions) am: `79819a085d` am: `10853c6c2a` am: `0794b5ebf4` am: `3393ab61cf`	2023-10-04 23:55:08 +00:00
Android.bp	[LSC] Add LOCAL_LICENSE_KINDS to hardware/interfaces	2021-02-21 20:36:55 -08:00
ICryptoFactory.hal	Fix incorrect comment in ICryptoFactory.hal	2018-02-01 12:26:43 -08:00
IDrmFactory.hal	Create drm 1.1 HAL	2018-01-21 16:06:49 -08:00
IDrmPlugin.hal	Revert "Revert "Fix MediaDrm security level APIs""	2018-02-11 18:58:21 +00:00
README.md	DRM 1.1: Add VINTF doc	2018-10-25 16:50:06 -07:00
types.hal	Add new secure stop methods	2018-01-29 14:27:29 -08:00

README.md

VINTF Device Manifest

In Android Pie, an <fqname> tag was introduced to be able to express multiple different versions of the same HAL in VINTF manifests (for DRM) in device manifest. For devices launching with previous versions of Android and upgrading to Android Pie, the device manifest must not use <fqname> to satisfy requirements for non-optional HALs, because older version of libvintf do not recognize it, causing errors during OTA update.

Assuming that the HAL provides @1.0::I*/default, @1.1::I*/clearkey and @1.1::I*/foo instances:

Devices upgrading to Android Pie

`target-level=1` or `target-level=2`

FCM (framework compatibility matrix) version 2 (released in Android Oreo MR1) requires DRM 1.0. If the new device manifest has Target FCM Version (i.e. target-level) 1 or 2, it should use the following snippet:

<hal format="hidl">
    <name>android.hardware.drm</name>
    <transport>hwbinder</transport>
    <version>1.0</version>
    <interface>
        <name>ICryptoFactory</name>
        <instance>default</instance>
    </interface>
    <interface>
        <name>IDrmFactory</name>
        <instance>default</instance>
    </interface>
    <fqname>@1.1::ICryptoFactory/clearkey</fqname>
    <fqname>@1.1::IDrmFactory/clearkey</fqname>
    <fqname>@1.1::ICryptoFactory/foo</fqname>
    <fqname>@1.1::IDrmFactory/foo</fqname>
</hal>

`target-level=3`

FCM (framework compatibility matrix) version 3 (released in Android Pie) requires DRM 1.1. If the new device manifest has Target FCM Version (i.e. target-level) 3, it should use the following snippet:

<hal format="hidl">
    <name>android.hardware.drm</name>
    <transport>hwbinder</transport>
    <version>1.1</version>
    <interface>
        <name>ICryptoFactory</name>
        <instance>clearkey</instance>
        <instance>foo</instance>
    </interface>
    <interface>
        <name>IDrmFactory</name>
        <instance>clearkey</instance>
        <instance>foo</instance>
    </interface>
    <fqname>@1.0::ICryptoFactory/default</fqname>
    <fqname>@1.0::IDrmFactory/default</fqname>
</hal>

Devices launching with Android Pie

If you have a new device launched with Android Pie (no OTA), both of the aforementioned snippets can be used. Besides, it is recommended to use the new, clearer format:

<hal format="hidl">
    <name>android.hardware.drm</name>
    <transport>hwbinder</transport>
    <fqname>@1.0::ICryptoFactory/default</fqname>
    <fqname>@1.0::IDrmFactory/default</fqname>
    <fqname>@1.1::ICryptoFactory/clearkey</fqname>
    <fqname>@1.1::IDrmFactory/clearkey</fqname>
    <fqname>@1.1::ICryptoFactory/foo</fqname>
    <fqname>@1.1::IDrmFactory/foo</fqname>
</hal>